[feat] Add lambda-invoke CLI for local + remote invocation

[manojmahapatra]

Describe the feature

Add a small CLI (lambda-invoke) that can invoke a Lambda function locally (via /invoke) or remotely (via AWS CLI). This mirrors Cargo Lambda’s invoke and improves the developer feedback loop.

• Local testing today requires manual curl to http://127.0.0.1:7000/invoke
• Remote testing requires aws lambda invoke commands

Inspiration

Cargo Lambda's invoke provides a simple loop. We can match that experience here with a low-risk change.

Use Case

1. Developers run their function locally and invoke it with a single command instead of using curl requests.
2. It can be used for remote smoke tests post deployment.
3. CI can invoke a local and remote function using a simple CLI.

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change